Improvement in looms



tim.

nAMlLroNJ n. Towns, or NEWARK, KNEWn J'nnsnr.`

Leners Patent No. 111,278, dated January 24, 1871.

IMPROVEMENT IN LOCMS..

The Schedule referred to in these Letters Patent and making pari:v ofthe same,

TJ/wizom it may conce/rn.

Be it known that I, HAMILioN E. Towne, of the city of Newark, county ofEssex and State of New Jersey, have invented a new'- and usefulImprovement in Looms, of which the following is a specification.

, This improvement relates more particularly to the Jacquard ormechanism forzoperating the harness, and

`its object is to con-struct a simple and cheap Jacquard, that may beused for each separate chain of warps-in looms for weaving narrowgoeds,` instead of 'operating all the chains by a common4 harness, sothat, should any obstruction occur to theA weaving in the web, all theothers will operate and it only be stopped, thus saving very mucl1.time.

The nature of this invention is as follows The harness, or thatarrangement which 4carries the warp of the fabric, is attached by rodsor cords to lifting hooks; these lifting hooks"'arey joined together inpairs by a hinge or wrist through a hinge-plate, to which plates, asforming part of the pair of hooks, the

harness is attached by means of/the rods and cords aforesaid. The pairsof hooks,.,of which there may be any number, according tothe workintended to be performed, are arranged in a row between twopatternrollers or pattern-wheels, against which they rest, each hookbeing kept firmly against its rollerv by a spring between it and itsmate, which rests against theopf posite roller. Each of the tworollers'receives an independent rotary motion, which may be given bymeans of a pawl and ratchet or otherwise.

O11 the rollers where they cornein contact with the hooks are placedsmall screws or projections, which, as each roller rotates, pressagainst the hooks, so as Yto push 'them away from the rollers, at anypoint desired, in order' that they may not engage with the-liftershereinafter described.

. The 1ifters,fof which there are two, one foreach side of the row ofhooks, consist ofa hook-formed blade, broad enough to engagewith all lofthe hooks on its side of the row fastened to avertical rod. Thesevertical rods, there being one on each side, are united by chainsworking around pulleys, or simply by working-beams above and below. Avertical reciprocating motion is given to the rods, which causes thelifters to alternately ascend and descend, and eugagewith the hooks,(except such as may' be thrown out of their reach by the projectionsorcams on the patterni rollers,) and by this means to raise and lower thehar-y ness positively in both directions, or by weights or springsattached to produce motion in one direction, to draw it up or downsteadily. j Description of the Accompanying Drawing. Figure 1 is a frontelevation of the mechanism; Figure 2 is a side elevation; y

`Figure 3 is a vertical section through the v patternrollers; V

Figure 4 is a View of the working-beam' removed from the machine Figure5-is a plan of onaof the litters and. Figure G is a planv of the, guidefor the lifting rod. Genera-l Description.

A and A are the lifting rods, which are connected by chains d and-dworkinghupon four pulleys, p p and' pfp', two at the top and two at thebottom.

B is the eccentric, and4 C is the connecting-rod, ,which operates thelifting rod D and D' are the liftersii1s,tened to the lifting rods and Aby collars and setfscrews for lifting the hooks O and O' are armsprojecting from the lifting rods A. and A', forthe vpurposeof operating'the' workingbeam L. The projecting arms are so arranged that as thc rodA descends, the arm O -w'ill strike the working-beam L in the hookmadeto receive it, and depress that end of the beam with its pawl M'.

G and G are' the pattern-rollers or pattern-wheels, and

11x11. are pins or teeth, of which there are eight or more on `the endof each roller, with which the pawls M `and M engage, thus givingalternately to each -of thesaid rollers a-i'otary motion of one-eighthof revolution at each alternate descent ofthe lifting rods and'lifters..v The part of a revolution made by the rollers may be more orless according tothe length and position of the working beam and thenumber of pins on theends of the rollers. V

R and R are friction-washers, held on by-a nut or pin, which, by meansvof the friction produced,l pre-l vent the rollers G and G' from turningback by the friction of the pawls M and Mcn the pins n 'n in ascending.Y

In the rollers' G and Gr' opposite each hook, and corresponding to thepart of arevolution which the roller makes at each descent of thelifting-rods and litters,- are placed s'mallscrews with projecting headslr lr, which act as Canis to press upon the hook-arms-e c and throw thehooks E Ef'away from the lifters D and D. Therefore, at each point, whenit is desired that the hook should remain down, a screw is put into theroller.' instead of these screws the rollers may have permanentprojections creams formed upon them to answer the same purpose, but 'thescrews are preferred, for, whilei screws perform theofce of solid cams,they can also easily be changed about, so as'to act at different `timesas the pattern-rollers turn and the action of the hooks altered by .thissimple expedient of changingthe number and position of the screws on therollers.

The rollers receive their motion from opposite endsof the Working-beam,and are entirely independent of each other. As one end of theworking-beam with its pawl is depressed, the other isolevated, and thepawl set' for the next'pin on the roller, the pawls being kept i'nproper position to engage the pins bythe spring S.

The hooks E E' are arranged in pairs upon the hook arms e e',4hinge-jointed at the bottom to hinge-plates H, each by a single pin orrivet, i.'

k is a spring, which serves to keep each pair. of

hooks pressed; steadily apart against the rollers G and G', and in aposition to be raised by the lifter imless thrown o r kept ont of thereach of the lifter by one of the screws lr c', or equivalent. To thehinge-plates H is fastened, by means ofthe rods or cords t, the harnessYV. Below the harness, fastened either to the floor or some stationarypart of the machine, are weights or springs P, which lserve to draw theharness and hooks down after being raised by the lifters.

T is a platform, which serves as a rest for thehingeplates H H when theyare down, and through which the cords or rods tpass. t

Great advantage is obtained by combining and joining the hooks E E inpairs, inasmuch as by a proper arrangement of the screws o' r ontherollers G and G', the warp may be kept raised up or remain loweredwhile the shuttle makes one, two, v.or more passages,

or the various parts of the Warp may even be kept continually changingpositions according to the fabric of hooks and keep them in theirproperverticalposition, and also opposite the screws fr fr, which are intendedto act npo'n AVthem. These plates 'are `held in` position by beingiitted into grooves g g in the rollers Gand G. l

F is a guide for the lifting rod A, to resist its' tendency to twist,which'oceurs whenever it happens that the hooks are so operating as tobring the weight ot" the harness unevenlyupon the lifter. The guideconsists of a bent arm fastened firmly at one end to the lifting rod Aby a set-sere\v, b, and having at the other YendV aY forkfe'f, whiehwcansliderllpand downuponl-a guide-rod or upon the opposite lifting rod A'.

Y Gitti/ms.,V 1. The lifting hooks hinged together, operating in pairs,and connected with the harness-frames, in com- 3. The' harness-frames,thehinged lifting hooks, thepair of pattern-rollers, andlvibrating'beam,with pawl arms and the reciprocating litters, all constructed andoperating together substantially as described. Signed this 19th day ofApril, A. D.1870.

HAMILTON E. .IOWLE.v

Witnesses F. A. LEHMANN,

Taos. S. MERCER.

